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Biology

Which best describes the benefit of transgenic organisms to society? A. Transgenic organisms can be used to identify people based on their DNA fingerprints. B. Transgenic organisms can be used to improve agricultural products and to create medicines. C. Transgenic organisms make it easier for stem cell research to occur without the need for embryos. D. Transgenic organisms make it easier to clone so that breeders can produce identical animals for sale.

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Biology

Which of these statements is true about autotrophs, but not heterotrophs?

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Biology

The rate of secretion of parathyroid hormone increases when

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Biology

What is the approximate number of possible chromosome combination for a human cell with 23 different chromosome?

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Skylar Calderon

Biology

Sickle cell disease results from an amino acid change from Valentine to glutamic acid. The result of this amino acid change is a deformed hemoglobin protein that does not carry oxygen well. What type of genetic mutation caused the amino acid change in a person with sickle cell anemia?

a. frameshift mutation

b. silent mutation

c. nonsense mutation

d. missense mutation

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Biology

Who compiled the laws of the roman empire into easy-to-understand codes?

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Biology

What are some top predators in arazona

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Biology

Why are theories modified over time?

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Biology

Living organisms do not play a role in the water cycle.

True Or false?

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Biology

Why are shellfish population often a good indicator of water quality

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Biology

Bacteria of species A and species B are kept in a single test tube, where they are fed two nutrients. Each day the test tube is supplied with 19,880 units of the first nutrient and 32,070 units of the second nutrient. Each bacterium of species A requires 4 units of the first nutrient and 5 units of the second, and each bacterium of species B requires 1 unit of the first nutrient and 6 units of the second. What populations of each species can coexist in the test tube so that all the nutrients are consumed each day?

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Biology

How does snake venom poison humans

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Biology

The hypothesis of continental drift is used to explain an event that happened

a. two million years ago.

b. two hundred million years ago.

c. two billion years ago.

d. two hundred billion years ago.

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Abel Christensen

Biology

What factors contributed to increased interest in conservation in the 1960s?

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Cornelius Patrick

Biology

True or false photosynthesis occurs in the chloroplast in prokaryotes.

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